Recently, I move into a apartment with old toilet, and there is air leakage on pipeline, but I don't know on where the smell come from. I would like to know on any chemical tools to identify the source of smell, such as making those smell become colorful smoke.Does anyone have any suggestions?Thanks in advance for any suggestions

Unfortunately only a trained home inspector can tell you. There are devices that will calculate bacteria count, but not smell. What does it smell like? Are you certain the smell is coming directly from the toilet? Is the toilet made out of porcelain?

There is some leakage of sewer odor within toilet and drain pipe. Is there any chemical tools to make those smell in color smoke in order to detect the source of odor? Yes, toilet and floor tile are used porcelain, and I have used toilet cleaner to remove old dirty stuff, but odor still exists. Do you have any suggestions? Thank you very much for any suggestions (^v^)

I'm guessing that you're smelling sewage Could be the main drain pipe is too close to the surface of the ground. Poor engineering?

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